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Author Topic: Edexcel CHEMISTRY DOUBTS!!!!  (Read 268595 times)

Offline guMnam

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Re: Edexcel CHEMISTRY DOUBTS!!!!
« Reply #1245 on: June 05, 2011, 10:05:55 pm »
wat is a disproportionation reaction ???
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Offline Malak

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Re: Edexcel CHEMISTRY DOUBTS!!!!
« Reply #1246 on: June 05, 2011, 10:08:30 pm »
In which a substance is both oxidised and reduced, hint is that it appears twice
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Offline Romeesa-Chan

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Re: Edexcel CHEMISTRY DOUBTS!!!!
« Reply #1247 on: June 05, 2011, 10:08:57 pm »
Quote from: guMnam on June 05, 2011, 10:05:55 pm
wat is a disproportionation reaction ???

Oxidation-reduction reaction in which the same element is both oxidized and reduced.
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Offline studz

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Re: Edexcel CHEMISTRY DOUBTS!!!!
« Reply #1248 on: June 06, 2011, 05:41:29 pm »
could anyone summarize and post reactions of benzene phenol diazonium and azo dye???  ??? ??? :-\
i'd really +rep that person! lol

also could anyone tell me what all do we need to study for unit 6 precisely? thanks
« Last Edit: June 06, 2011, 06:22:52 pm by studz »
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Offline High-R

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Re: Edexcel CHEMISTRY DOUBTS!!!!
« Reply #1249 on: June 06, 2011, 07:02:43 pm »
http://www.avogadro.co.uk/organic/azodyes/azodyes.htm
is a good site might help!

unit6- just practice the pastpapers and review exercises in the text books!
:D
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Re: Edexcel CHEMISTRY DOUBTS!!!!
« Reply #1250 on: June 06, 2011, 07:03:38 pm »
Quote from: studz on June 06, 2011, 05:41:29 pm
could anyone summarize and post reactions of benzene phenol diazonium and azo dye???  ??? ??? :-\
i'd really +rep that person! lol

also could anyone tell me what all do we need to study for unit 6 precisely? thanks

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Offline studz

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Re: Edexcel CHEMISTRY DOUBTS!!!!
« Reply #1251 on: June 06, 2011, 07:46:34 pm »
Quote from: Amelia on June 06, 2011, 07:03:38 pm
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u sure about this ??? ??? because i am having a hard time studying unit 5's organic chem for unit 6
! its so hard!  :-\ :'(
i thought its all about simple identification tests for carbonyl groups and all..the basic stuff :/
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Amelia

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Re: Edexcel CHEMISTRY DOUBTS!!!!
« Reply #1252 on: June 06, 2011, 07:55:30 pm »
Quote from: studz on June 06, 2011, 07:46:34 pm
u sure about this ??? ??? because i am having a hard time studying unit 5's organic chem for unit 6
! its so hard!  :-\ :'(
i thought its all about simple identification tests for carbonyl groups and all..the basic stuff :/

Unit 6 as in Practicals? I thought different. Well, then you dont have to read those. Just revise your practice papers.  ;)

I haven't done Edexcel so I wont be of much help in the practical part.  :(
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Offline studz

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Re: Edexcel CHEMISTRY DOUBTS!!!!
« Reply #1253 on: June 06, 2011, 08:06:03 pm »
its alternative to practical actually..argh i have no idea  :-\ ???
oh ok u do CIE..well np  :)
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Amelia

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Re: Edexcel CHEMISTRY DOUBTS!!!!
« Reply #1254 on: June 06, 2011, 08:08:46 pm »
Quote from: studz on June 06, 2011, 08:06:03 pm
its alternative to practical actually..argh i have no idea  :-\ ???
oh ok u do CIE..well np  :)

You are just nervous. It's not a good thing, you know  ::)  :P Just relax and revise whatever you have done already in Unit 6. That's all.

Used to do*  ;)
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Offline Assi1993

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Re: Edexcel CHEMISTRY DOUBTS!!!!
« Reply #1255 on: June 06, 2011, 08:15:09 pm »
do the transition metals and organic synthesis chapter well...

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Offline studz

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Re: Edexcel CHEMISTRY DOUBTS!!!!
« Reply #1256 on: June 06, 2011, 08:16:52 pm »
lol yeah i am kinda nervous because there is alot to do maybe
besides we only have 3 papers to practice so thats why

oh great we have a senior here :P

yes assi that is what i am doing..organic reactions are so yuk! :P
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Offline ibuprofen500

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Re: Edexcel CHEMISTRY DOUBTS!!!!
« Reply #1257 on: June 06, 2011, 08:47:07 pm »
does anyone have notes on preparation of aspirin or paracetamol ? which ever it is in the course 
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Offline Romeesa-Chan

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Re: Edexcel CHEMISTRY DOUBTS!!!!
« Reply #1258 on: June 06, 2011, 08:52:56 pm »
Quote from: studz on June 06, 2011, 08:16:52 pm
lol yeah i am kinda nervous because there is alot to do maybe
besides we only have 3 papers to practice so thats why

oh great we have a senior here :P

yes assi that is what i am doing..organic reactions are so yuk! :P

Ditto. The last chapter in the textbook is just EW.
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Offline Malak

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Re: Edexcel CHEMISTRY DOUBTS!!!!
« Reply #1259 on: June 06, 2011, 08:55:34 pm »
Quote from: ibuprofen500 on June 06, 2011, 08:47:07 pm
does anyone have notes on preparation of aspirin or paracetamol ? which ever it is in the course 
I dont know much about the A2 syllabus as I am doing AS, but I found this, Dont know how much it is relevant..
File is attached
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